Bulb



FIG. 1 is a front, rear, right and left side view of a bulb inaccordance with the present disclosure;

FIG. 2 is a top side view thereof; and,

FIG. 3 is a bottom side view thereof.

The broken lines are for illustrative purposes only and form on part ofthe claimed design.

CLAIM The ornamental design for a bulb, as shown and described.